Sumitomo Chemical Company, Limited

Chinehito Ebina

Shinichi Yachigo

Tamaki Ishii

Manji Sasaki

Haruki Okamura

Yasunori Uetani

Kazuhiko Hashimoto

Tetsuo Yamaguchi

Naoki Inui

Hideo Nagasaki

Haruyoshi Osaki

Hiroshi Moriuma

Miyuki Oikawa

Eizo Okino

Taisuke Okita

Masakatsu Yoshimura

Kyoko Nagase

Shin-ichi Yachigo

A positive resist composition containing a quinone diazide compound and an alkali-soluble resin which contains a resin (A) obtained by a condensation reaction of an aldehyde compound, at least one phenol compound of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently a hydrogen atom, or a C.sub.1 -C.sub.4 alkyl or alkoxy group, and j is 1 or 2, and at least one compound of the formula: ##STR2## wherein R'.sub.1, R'.sub.2, R'.sub.3, R'.sub.4, R'.sub.5 and R'.sub.6 are independently a hydrogen atom, or a C.sub.1 -C.sub.4 alkyl or alkoxy group, R'.sub.7 is a hydrogen, a C.sub.1 -C.sub.4 alkyl group or an aryl group, and k, m and n are independently 0, 1 or 2 provided that a sum of k, m and n is larger than 2, which composition is excellent in balance among various properties such as a profile, a sensitivity, heat resistance and a depth of focus.

Positive resist composition

A rubber composition comprising a rubber, a filler and a diamide compound represented by the formula: ##STR1## wherein X is hydrogen, alkyl of 1 to 18 carbon atoms, alkoxy of 1 to 18 carbon atoms, alkanoyl of 2 to 19 total carbon atoms, amino, nitro, cyano, hydroxy, carboxy or halogen, and n is an integer of 2 to 12. This rubber composition is increased in its loss factor and is useful for tires and rubber vibration isolators. For example, the resulting tires prepared from the rubber composition are improved in their gripping performance.

Rubber composition

Dynamic properties of vulcanized rubber are improved, without accelerating scorching property remarkably nor deteriorating flex-cracking resistance, by incorporating in a filler-containing natural or synthetic rubber composition, a dinitrodiamine derivative represented by the general formula ##STR1## wherein A represents a divalent aliphatic group, a divalent cycloaliphatic group, a divalent aromatic group or a group represented by the formula --CH.sub.2 --X--CH.sub.2 --, wherein X represents a cycloalkylene group or a phenylene group, provided that if A represents a cycloaliphatic group or an aromatic group, the two carbon atoms in A which are bonding to the nitrogen atom are not vicinal to each other; R and R' independently represent hydrogen atom or an alkyl group having 1-12 carbon atoms and may conjointly form a ring; and R' represents hydrogen atom, an aliphatic group, a cycloaliphatic group or an aromatic group. A process for producing the dinitrodiamine derivatives is also disclosed.

3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy]-1,1-dimethylethyl}-2,4,8,10-tetraoxaspiro[5.5] undecane having a novel crystalline structure which, when subjected to Cu-K.sub..alpha. X-ray diffraction, shows sharp X-ray diffraction peaks at angles of diffraction, 2.theta.=4.2.degree. and 2.theta.=10.6.degree.. Also provided is a method for producing this compound, using a certain recrystallization solvent.

Production of hydroxyphenylpropionic acid ester having a novel

A thermally stable polyolefin resin improved in thermal processing by the incorporation therein of a phenolic compound represented by the general formula: ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group, and a phosphite or phosphonite compound of 0.1 to 15 times by weight based on the phenolic compound.

Polyolefin resin composition

3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy]-1,1-dimethylethyl}-2,4,8,10-tetraoxaspiro[5.5] undecane having a novel crystalline structure which, when subjected to Cu-K.sub..alpha. X-ray diffraction, shows sharp X-ray diffraction peaks at angles of diffraction, 2.theta.=4.2.degree. and 2.theta.=10.6.degree.. Also provided is a method for producing this compound.

Hydroxyphenylpropionic acid ester with novel crystalline structure and

Method for producing 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]-1,1-dime thylethyl}-2,4,8,10-tetraoxaspiro[5.5]undecane by ester exchange of a 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)-propionic acid ester with 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5.5]-undecane at a temperature of 170.degree.-250.degree. C. using a calcium compound as a catalyst in an amount of 0.05-1.5 moles per mole of the 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro[5.5]-undecane.

Method for producing hydroxyphenylpropionic acid ester

Method for the purification of 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]-1,1-dime thylethyl} -2,4,8,10-tetraoxaspiro[5.5]undecane, to form crystals having a crystalline structure which, when subjected to Cu-K.sub..alpha. X-ray diffraction, show sharp X-ray diffraction peaks at angles of diffraction, to 2.theta.=2.8.degree., 2.theta.=8.7.degree. and 2.theta.=11.7.degree., by recrystallizing the ester at a temperature lower than 40.degree. C. using as a recrystallization solvent, A C.sub.5 -C.sub.10 alicyclic hydrocarbon, which may contain a limited amount of certain other solvents, or using a mixed solvent of a C.sub.5 -C.sub.10 aliphatic hydrocarbon and at least one other certain solvent in a certain weight ratio.

Purification of hydroxyphenylpropionic acid ester

There are provided acetylenecarbamide derivatives of the formula: ##STR1## wherein A represents ##STR2## in which R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, and R.sub.2 represents a C.sub.2 -C.sub.9 alkyl group. These derivatives are useful as stabilizers for polymeric organic substances susceptible to thermal and oxygen-induced degradation.

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Minoo, Japan

Chinehito Ebina